th.header { 
    background-image: url(../images/icon/small.gif);     
    cursor: pointer; 
    font-weight: bold; 
    background-repeat: no-repeat; 
    background-position: center left; 
    padding-left: 20px; 
    border-right: 1px solid #dad9c7; 
    margin-left: -1px; 
} 
th.headerSortDown { 
    background-image: url(../images/icon/small_desc.gif); 
} 
th.headerSortUp { 
    background-image: url(../images/icon/asc.gif); 
} 